Buddleias are vigorous
growers that remain evergreen in winters with minimum temperatures of 20
degrees. Where winters are more severe they can be deciduous, merely
dropping leaves, or herbaceous, freezing completely back to the ground.
Phenomenal growth is achieved the next spring, even if they do freeze all
the way to the ground. Leaving branches on until spring and mulching over
winter are good practices for those in the coldest areas of zone 5.
While flower colors are often
referred to as blue, there are no true blue (or red) flowers in the Buddleia
genus. Their colors range from very dark purple to pink to pure white. Some
hybrids have orange and gold flowers.
(perhaps the darkest Buddleia davidii) is a very old variety
that can easily grow to 15 feet. It has an open structure and slightly
shorter flowers than more modern selections .
is a Mountain Valley Growers’ introduction. It was bred here to be extra
drought resistant, to have denser growth, and to have more heat tolerance
during blooming. It has a pretty dark purple flower . It tops out at about
10 feet. It also does great under normal garden conditions as long as it
gets proper drainage.
is a smaller shrub that tops out at about 6 feet. The flowers are a bit
shorter than some others and the color is more maroon than red. At about 6
feet, the branches tend to splay out rather than grow upright. It might
look untidy to some but we like the weeping habit and so do the birds.
is a sport of Royal Red. It has cream and green variegated leaves and maroon
flowers. This plant rarely gets over 4 feet here. It may be marginal in a
true zone 5 winter so a deep mulch is recommended. Branches sometimes revert
back to all green but these are easily removed.
also known as Nanho Blue, was, at first introduction, thought
to be a smaller bush. However, the bush can get up to 12 feet tall. The
lilac flowers are smaller but very prolific.
is a tall, stately shrub with long bubblegum pink flowers. It
gets about 8 feet tall and grows densely which makes it a good choice for a
Profusion has long, pure white flowers and
reaches about 8 feet tall. It looks great planted with red flowers like
Maraschino Cherry Salvia.
Evil Ways is a golden leaved beauty.
Perfect for darker spots in the garden. Gorgeous flower just like Royal Red.
Sungold is a Buddleia hybrid (Buddleia x
weyeriana) that is a dense, well-formed shrub that reaches about 8 feet. It
is loaded with lots of golden pom-pom like flowers. It may need to be
mulched in the coldest zone 5 winters.
is a Buddleia hybrid (Buddleia x weyeriana) that grows a
little slower and may be shorter than other B. davidii’s. The flowers are an
intriguing mix of pink and gold. It may need to be mulched in the coldest
zone 5 winters.
Fountain Butterfly Bush
(Buddleia alternifolia) has graceful, drooping branches that
are covered in the spring with sprays of lilac flowers that give the whole plant a water